One eyewitness said: “Players were violently pushing and shoving each other, some throwing punches with a clench fist. Security held down some players onto the sand to calm them down. The police moved some of the aggressive players away from the fight.”

A video of the fighting was later shared widely on social media.

The tournament’s organiser believes the clubs, from Rhondda Cynon Taff, could be accused by the WRU of bringing the game into disrepute.

But Ashleigh Walters, from Beach Rugby Wales, told the BBC that would be “making a mountain out of a molehill”.

He said he did not condone the violence, but asked: “Are they going to do that to every club that has a dust-up on camera?

“Are they going to charge every club that has a bust-up on the pitch every Saturday?”

A spokesman for Porth confirmed the club has sent its response to the WRU.